//
//  MainTabbar.swift
//  WeiboCY
//
//  Created by 林小陌 on 16/1/12.
//  Copyright © 2016年 林小陌. All rights reserved.
//

import UIKit

class MainTabbar: UITabBar {

    override init(frame: CGRect) {
        super.init(frame: frame)
        
        addSubview(plusBtn)
    }
//表示对象是通过XIB 创建的
    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    override func layoutSubviews() {
        super.layoutSubviews()
        
        
        let w = self.bounds.width/5
        let h = self.bounds.height
        let rect = CGRect(x: 0 ,y: 0 ,width: w,height: h)
        
        var index: CGFloat = 0
        
        for subView in subviews{
            if subView.isKindOfClass(NSClassFromString("UITabBarButton")!){
            print(subView)
                subView.frame = CGRectOffset(rect, index * w, 0)
                index += (index == 1 ? 2 : 1)
            }
    }
        
        plusBtn.frame = CGRectOffset(rect, 2 * w, 0)
    
}
    
        lazy var plusBtn: UIButton = {
        let btn = UIButton ()
        
        btn.setBackgroundImage(UIImage(named: "tabbar_compose_button"), forState: .Normal)
        btn.setBackgroundImage(UIImage(named: "tabbar_compose_button_highlighted"), forState: .Highlighted)
        //设置按钮的图片
        btn.setImage(UIImage(named: "tabbar_compose_icon_add"), forState: .Normal)
        btn.setImage(UIImage(named: "tabbar_compose_icon_add_highlighted"), forState: .Highlighted)

        btn.sizeToFit()
        return btn
    }()
    
    
    
    
    
    
}
